2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 2004-2015 The OpenLDAP Foundation.
5 * Portions Copyright 2004-2005 Howard Chu, Symas Corporation.
6 * Portions Copyright 2004 Hewlett-Packard Company.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
13 * A copy of this license is available in the file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
18 * This work was developed by Howard Chu for inclusion in
19 * OpenLDAP Software, based on prior work by Neil Dunbar (HP).
20 * This work was sponsored by the Hewlett-Packard Company.
25 /* This file implements "Password Policy for LDAP Directories",
26 * based on draft behera-ldap-password-policy-09
29 #ifdef SLAPD_OVER_PPOLICY
35 #define LIBLTDL_DLL_IMPORT /* Win32: don't re-export libltdl's symbols */
40 #include <ac/string.h>
44 #ifndef MODULE_NAME_SZ
45 #define MODULE_NAME_SZ 256
48 #ifndef PPOLICY_DEFAULT_MAXRECORDED_FAILURE
49 #define PPOLICY_DEFAULT_MAXRECORDED_FAILURE 5
52 /* Per-instance configuration information */
53 typedef struct pp_info {
54 struct berval def_policy; /* DN of default policy subentry */
55 int use_lockout; /* send AccountLocked result? */
56 int hash_passwords; /* transparently hash cleartext pwds */
57 int forward_updates; /* use frontend for policy state updates */
60 /* Our per-connection info - note, it is not per-instance, it is
61 * used by all instances
63 typedef struct pw_conn {
64 struct berval dn; /* DN of restricted user */
67 static pw_conn *pwcons;
68 static int ppolicy_cid;
71 typedef struct pass_policy {
72 AttributeDescription *ad; /* attribute to which the policy applies */
73 int pwdMinAge; /* minimum time (seconds) until passwd can change */
74 int pwdMaxAge; /* time in seconds until pwd will expire after change */
75 int pwdInHistory; /* number of previous passwords kept */
76 int pwdCheckQuality; /* 0 = don't check quality, 1 = check if possible,
77 2 = check mandatory; fail if not possible */
78 int pwdMinLength; /* minimum number of chars in password */
79 int pwdExpireWarning; /* number of seconds that warning controls are
80 sent before a password expires */
81 int pwdGraceAuthNLimit; /* number of times you can log in with an
83 int pwdLockout; /* 0 = do not lockout passwords, 1 = lock them out */
84 int pwdLockoutDuration; /* time in seconds a password is locked out for */
85 int pwdMaxFailure; /* number of failed binds allowed before lockout */
86 int pwdMaxRecordedFailure; /* number of failed binds to store */
87 int pwdFailureCountInterval; /* number of seconds before failure
89 int pwdMustChange; /* 0 = users can use admin set password
90 1 = users must change password after admin set */
91 int pwdAllowUserChange; /* 0 = users cannot change their passwords
92 1 = users can change them */
93 int pwdSafeModify; /* 0 = old password doesn't need to come
94 with password change request
95 1 = password change must supply existing pwd */
96 char pwdCheckModule[MODULE_NAME_SZ]; /* name of module to dynamically
97 load to check password */
100 typedef struct pw_hist {
101 time_t t; /* timestamp of history entry */
102 struct berval pw; /* old password hash */
103 struct berval bv; /* text of entire entry */
104 struct pw_hist *next;
107 /* Operational attributes */
108 static AttributeDescription *ad_pwdChangedTime, *ad_pwdAccountLockedTime,
109 *ad_pwdFailureTime, *ad_pwdHistory, *ad_pwdGraceUseTime, *ad_pwdReset,
110 *ad_pwdPolicySubentry;
112 static struct schema_info {
114 AttributeDescription **ad;
116 { "( 1.3.6.1.4.1.42.2.27.8.1.16 "
117 "NAME ( 'pwdChangedTime' ) "
118 "DESC 'The time the password was last changed' "
119 "EQUALITY generalizedTimeMatch "
120 "ORDERING generalizedTimeOrderingMatch "
121 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
122 "SINGLE-VALUE NO-USER-MODIFICATION USAGE directoryOperation )",
123 &ad_pwdChangedTime },
124 { "( 1.3.6.1.4.1.42.2.27.8.1.17 "
125 "NAME ( 'pwdAccountLockedTime' ) "
126 "DESC 'The time an user account was locked' "
127 "EQUALITY generalizedTimeMatch "
128 "ORDERING generalizedTimeOrderingMatch "
129 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
132 /* Not until Relax control is released */
133 "NO-USER-MODIFICATION "
135 "USAGE directoryOperation )",
136 &ad_pwdAccountLockedTime },
137 { "( 1.3.6.1.4.1.42.2.27.8.1.19 "
138 "NAME ( 'pwdFailureTime' ) "
139 "DESC 'The timestamps of the last consecutive authentication failures' "
140 "EQUALITY generalizedTimeMatch "
141 "ORDERING generalizedTimeOrderingMatch "
142 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
143 "NO-USER-MODIFICATION USAGE directoryOperation )",
144 &ad_pwdFailureTime },
145 { "( 1.3.6.1.4.1.42.2.27.8.1.20 "
146 "NAME ( 'pwdHistory' ) "
147 "DESC 'The history of users passwords' "
148 "EQUALITY octetStringMatch "
149 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 "
150 "NO-USER-MODIFICATION USAGE directoryOperation )",
152 { "( 1.3.6.1.4.1.42.2.27.8.1.21 "
153 "NAME ( 'pwdGraceUseTime' ) "
154 "DESC 'The timestamps of the grace login once the password has expired' "
155 "EQUALITY generalizedTimeMatch "
156 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
157 "NO-USER-MODIFICATION USAGE directoryOperation )",
158 &ad_pwdGraceUseTime },
159 { "( 1.3.6.1.4.1.42.2.27.8.1.22 "
160 "NAME ( 'pwdReset' ) "
161 "DESC 'The indication that the password has been reset' "
162 "EQUALITY booleanMatch "
163 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
164 "SINGLE-VALUE USAGE directoryOperation )",
166 { "( 1.3.6.1.4.1.42.2.27.8.1.23 "
167 "NAME ( 'pwdPolicySubentry' ) "
168 "DESC 'The pwdPolicy subentry in effect for this object' "
169 "EQUALITY distinguishedNameMatch "
170 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 "
173 /* Not until Relax control is released */
174 "NO-USER-MODIFICATION "
176 "USAGE directoryOperation )",
177 &ad_pwdPolicySubentry },
181 /* User attributes */
182 static AttributeDescription *ad_pwdMinAge, *ad_pwdMaxAge, *ad_pwdInHistory,
183 *ad_pwdCheckQuality, *ad_pwdMinLength, *ad_pwdMaxFailure,
184 *ad_pwdGraceAuthNLimit, *ad_pwdExpireWarning, *ad_pwdLockoutDuration,
185 *ad_pwdFailureCountInterval, *ad_pwdCheckModule, *ad_pwdLockout,
186 *ad_pwdMustChange, *ad_pwdAllowUserChange, *ad_pwdSafeModify,
187 *ad_pwdAttribute, *ad_pwdMaxRecordedFailure;
189 #define TAB(name) { #name, &ad_##name }
191 static struct schema_info pwd_UsSchema[] = {
196 TAB(pwdCheckQuality),
199 TAB(pwdMaxRecordedFailure),
200 TAB(pwdGraceAuthNLimit),
201 TAB(pwdExpireWarning),
203 TAB(pwdLockoutDuration),
204 TAB(pwdFailureCountInterval),
207 TAB(pwdAllowUserChange),
212 static ldap_pvt_thread_mutex_t chk_syntax_mutex;
216 PPOLICY_HASH_CLEARTEXT,
220 static ConfigDriver ppolicy_cf_default;
222 static ConfigTable ppolicycfg[] = {
223 { "ppolicy_default", "policyDN", 2, 2, 0,
224 ARG_DN|ARG_QUOTE|ARG_MAGIC|PPOLICY_DEFAULT, ppolicy_cf_default,
225 "( OLcfgOvAt:12.1 NAME 'olcPPolicyDefault' "
226 "DESC 'DN of a pwdPolicy object for uncustomized objects' "
227 "SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
228 { "ppolicy_hash_cleartext", "on|off", 1, 2, 0,
229 ARG_ON_OFF|ARG_OFFSET|PPOLICY_HASH_CLEARTEXT,
230 (void *)offsetof(pp_info,hash_passwords),
231 "( OLcfgOvAt:12.2 NAME 'olcPPolicyHashCleartext' "
232 "DESC 'Hash passwords on add or modify' "
233 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
234 { "ppolicy_forward_updates", "on|off", 1, 2, 0,
235 ARG_ON_OFF|ARG_OFFSET,
236 (void *)offsetof(pp_info,forward_updates),
237 "( OLcfgOvAt:12.4 NAME 'olcPPolicyForwardUpdates' "
238 "DESC 'Allow policy state updates to be forwarded via updateref' "
239 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
240 { "ppolicy_use_lockout", "on|off", 1, 2, 0,
241 ARG_ON_OFF|ARG_OFFSET|PPOLICY_USE_LOCKOUT,
242 (void *)offsetof(pp_info,use_lockout),
243 "( OLcfgOvAt:12.3 NAME 'olcPPolicyUseLockout' "
244 "DESC 'Warn clients with AccountLocked' "
245 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
246 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
249 static ConfigOCs ppolicyocs[] = {
250 { "( OLcfgOvOc:12.1 "
251 "NAME 'olcPPolicyConfig' "
252 "DESC 'Password Policy configuration' "
253 "SUP olcOverlayConfig "
254 "MAY ( olcPPolicyDefault $ olcPPolicyHashCleartext $ "
255 "olcPPolicyUseLockout $ olcPPolicyForwardUpdates ) )",
256 Cft_Overlay, ppolicycfg },
261 ppolicy_cf_default( ConfigArgs *c )
263 slap_overinst *on = (slap_overinst *)c->bi;
264 pp_info *pi = (pp_info *)on->on_bi.bi_private;
265 int rc = ARG_BAD_CONF;
267 assert ( c->type == PPOLICY_DEFAULT );
268 Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default\n", 0, 0, 0);
271 case SLAP_CONFIG_EMIT:
272 Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default emit\n", 0, 0, 0);
274 if ( !BER_BVISEMPTY( &pi->def_policy )) {
275 rc = value_add_one( &c->rvalue_vals,
278 rc = value_add_one( &c->rvalue_nvals,
282 case LDAP_MOD_DELETE:
283 Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default delete\n", 0, 0, 0);
284 if ( pi->def_policy.bv_val ) {
285 ber_memfree ( pi->def_policy.bv_val );
286 pi->def_policy.bv_val = NULL;
288 pi->def_policy.bv_len = 0;
291 case SLAP_CONFIG_ADD:
292 /* fallthrough to LDAP_MOD_ADD */
294 Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default add\n", 0, 0, 0);
295 if ( pi->def_policy.bv_val ) {
296 ber_memfree ( pi->def_policy.bv_val );
298 pi->def_policy = c->value_ndn;
299 ber_memfree( c->value_dn.bv_val );
300 BER_BVZERO( &c->value_dn );
301 BER_BVZERO( &c->value_ndn );
312 parse_time( char *atm )
315 struct lutil_timet tt;
316 time_t ret = (time_t)-1;
318 if ( lutil_parsetime( atm, &tm ) == 0) {
319 lutil_tm2time( &tm, &tt );
326 account_locked( Operation *op, Entry *e,
327 PassPolicy *pp, Modifications **mod )
333 if ( !pp->pwdLockout )
336 if ( (la = attr_find( e->e_attrs, ad_pwdAccountLockedTime )) != NULL ) {
337 BerVarray vals = la->a_nvals;
340 * there is a lockout stamp - we now need to know if it's
343 if (vals[0].bv_val != NULL) {
347 if ((then = parse_time( vals[0].bv_val )) == (time_t)0)
350 now = slap_get_time();
352 /* Still in the future? not yet in effect */
356 if (!pp->pwdLockoutDuration)
359 if (now < then + pp->pwdLockoutDuration)
362 m = ch_calloc( sizeof(Modifications), 1 );
363 m->sml_op = LDAP_MOD_DELETE;
365 m->sml_type = ad_pwdAccountLockedTime->ad_cname;
366 m->sml_desc = ad_pwdAccountLockedTime;
375 /* IMPLICIT TAGS, all context-specific */
376 #define PPOLICY_WARNING 0xa0L /* constructed + 0 */
377 #define PPOLICY_ERROR 0x81L /* primitive + 1 */
379 #define PPOLICY_EXPIRE 0x80L /* primitive + 0 */
380 #define PPOLICY_GRACE 0x81L /* primitive + 1 */
382 static const char ppolicy_ctrl_oid[] = LDAP_CONTROL_PASSWORDPOLICYRESPONSE;
385 create_passcontrol( Operation *op, int exptime, int grace, LDAPPasswordPolicyError err )
387 BerElementBuffer berbuf, bb2;
388 BerElement *ber = (BerElement *) &berbuf, *b2 = (BerElement *) &bb2;
389 LDAPControl c = { 0 }, *cp;
393 BER_BVZERO( &c.ldctl_value );
395 ber_init2( ber, NULL, LBER_USE_DER );
396 ber_printf( ber, "{" /*}*/ );
398 if ( exptime >= 0 ) {
399 ber_init2( b2, NULL, LBER_USE_DER );
400 ber_printf( b2, "ti", PPOLICY_EXPIRE, exptime );
401 rc = ber_flatten2( b2, &bv, 1 );
402 (void)ber_free_buf(b2);
407 ber_printf( ber, "tO", PPOLICY_WARNING, &bv );
408 ch_free( bv.bv_val );
409 } else if ( grace > 0 ) {
410 ber_init2( b2, NULL, LBER_USE_DER );
411 ber_printf( b2, "ti", PPOLICY_GRACE, grace );
412 rc = ber_flatten2( b2, &bv, 1 );
413 (void)ber_free_buf(b2);
418 ber_printf( ber, "tO", PPOLICY_WARNING, &bv );
419 ch_free( bv.bv_val );
422 if (err != PP_noError ) {
423 ber_printf( ber, "te", PPOLICY_ERROR, err );
425 ber_printf( ber, /*{*/ "N}" );
427 if (ber_flatten2( ber, &c.ldctl_value, 0 ) == -1) {
430 cp = op->o_tmpalloc( sizeof( LDAPControl ) + c.ldctl_value.bv_len, op->o_tmpmemctx );
431 cp->ldctl_oid = (char *)ppolicy_ctrl_oid;
432 cp->ldctl_iscritical = 0;
433 cp->ldctl_value.bv_val = (char *)&cp[1];
434 cp->ldctl_value.bv_len = c.ldctl_value.bv_len;
435 AC_MEMCPY( cp->ldctl_value.bv_val, c.ldctl_value.bv_val, c.ldctl_value.bv_len );
437 (void)ber_free_buf(ber);
442 static LDAPControl **
443 add_passcontrol( Operation *op, SlapReply *rs, LDAPControl *ctrl )
445 LDAPControl **ctrls, **oldctrls = rs->sr_ctrls;
450 for ( ; oldctrls[n]; n++ )
455 ctrls = op->o_tmpcalloc( sizeof( LDAPControl * ), n, op->o_tmpmemctx );
459 for ( ; oldctrls[n]; n++ ) {
460 ctrls[n] = oldctrls[n];
466 rs->sr_ctrls = ctrls;
472 ppolicy_get_default( PassPolicy *pp )
474 memset( pp, 0, sizeof(PassPolicy) );
476 pp->ad = slap_schema.si_ad_userPassword;
478 /* Users can change their own password by default */
479 pp->pwdAllowUserChange = 1;
484 ppolicy_get( Operation *op, Entry *e, PassPolicy *pp )
486 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
487 pp_info *pi = on->on_bi.bi_private;
496 ppolicy_get_default( pp );
498 if ((a = attr_find( e->e_attrs, ad_pwdPolicySubentry )) == NULL) {
500 * entry has no password policy assigned - use default
502 vals = &pi->def_policy;
507 if (vals[0].bv_val == NULL) {
508 Debug( LDAP_DEBUG_ANY,
509 "ppolicy_get: NULL value for policySubEntry\n", 0, 0, 0 );
514 op->o_bd->bd_info = (BackendInfo *)on->on_info;
515 rc = be_entry_get_rw( op, vals, NULL, NULL, 0, &pe );
516 op->o_bd->bd_info = (BackendInfo *)on;
518 if ( rc ) goto defaultpol;
520 #if 0 /* Only worry about userPassword for now */
521 if ((a = attr_find( pe->e_attrs, ad_pwdAttribute )))
522 slap_bv2ad( &a->a_vals[0], &pp->ad, &text );
525 if ( ( a = attr_find( pe->e_attrs, ad_pwdMinAge ) )
526 && lutil_atoi( &pp->pwdMinAge, a->a_vals[0].bv_val ) != 0 )
528 if ( ( a = attr_find( pe->e_attrs, ad_pwdMaxAge ) )
529 && lutil_atoi( &pp->pwdMaxAge, a->a_vals[0].bv_val ) != 0 )
531 if ( ( a = attr_find( pe->e_attrs, ad_pwdInHistory ) )
532 && lutil_atoi( &pp->pwdInHistory, a->a_vals[0].bv_val ) != 0 )
534 if ( ( a = attr_find( pe->e_attrs, ad_pwdCheckQuality ) )
535 && lutil_atoi( &pp->pwdCheckQuality, a->a_vals[0].bv_val ) != 0 )
537 if ( ( a = attr_find( pe->e_attrs, ad_pwdMinLength ) )
538 && lutil_atoi( &pp->pwdMinLength, a->a_vals[0].bv_val ) != 0 )
540 if ( ( a = attr_find( pe->e_attrs, ad_pwdMaxFailure ) )
541 && lutil_atoi( &pp->pwdMaxFailure, a->a_vals[0].bv_val ) != 0 )
543 if ( ( a = attr_find( pe->e_attrs, ad_pwdMaxRecordedFailure ) )
544 && lutil_atoi( &pp->pwdMaxRecordedFailure, a->a_vals[0].bv_val ) != 0 )
546 if ( ( a = attr_find( pe->e_attrs, ad_pwdGraceAuthNLimit ) )
547 && lutil_atoi( &pp->pwdGraceAuthNLimit, a->a_vals[0].bv_val ) != 0 )
549 if ( ( a = attr_find( pe->e_attrs, ad_pwdExpireWarning ) )
550 && lutil_atoi( &pp->pwdExpireWarning, a->a_vals[0].bv_val ) != 0 )
552 if ( ( a = attr_find( pe->e_attrs, ad_pwdFailureCountInterval ) )
553 && lutil_atoi( &pp->pwdFailureCountInterval, a->a_vals[0].bv_val ) != 0 )
555 if ( ( a = attr_find( pe->e_attrs, ad_pwdLockoutDuration ) )
556 && lutil_atoi( &pp->pwdLockoutDuration, a->a_vals[0].bv_val ) != 0 )
559 if ( ( a = attr_find( pe->e_attrs, ad_pwdCheckModule ) ) ) {
560 strncpy( pp->pwdCheckModule, a->a_vals[0].bv_val,
561 sizeof(pp->pwdCheckModule) );
562 pp->pwdCheckModule[sizeof(pp->pwdCheckModule)-1] = '\0';
565 if ((a = attr_find( pe->e_attrs, ad_pwdLockout )))
566 pp->pwdLockout = bvmatch( &a->a_nvals[0], &slap_true_bv );
567 if ((a = attr_find( pe->e_attrs, ad_pwdMustChange )))
568 pp->pwdMustChange = bvmatch( &a->a_nvals[0], &slap_true_bv );
569 if ((a = attr_find( pe->e_attrs, ad_pwdAllowUserChange )))
570 pp->pwdAllowUserChange = bvmatch( &a->a_nvals[0], &slap_true_bv );
571 if ((a = attr_find( pe->e_attrs, ad_pwdSafeModify )))
572 pp->pwdSafeModify = bvmatch( &a->a_nvals[0], &slap_true_bv );
574 if ( pp->pwdMaxRecordedFailure < pp->pwdMaxFailure )
575 pp->pwdMaxRecordedFailure = pp->pwdMaxFailure;
576 if ( !pp->pwdMaxRecordedFailure )
577 pp->pwdMaxRecordedFailure = PPOLICY_DEFAULT_MAXRECORDED_FAILURE;
579 op->o_bd->bd_info = (BackendInfo *)on->on_info;
580 be_entry_release_r( op, pe );
581 op->o_bd->bd_info = (BackendInfo *)on;
587 op->o_bd->bd_info = (BackendInfo *)on->on_info;
588 be_entry_release_r( op, pe );
589 op->o_bd->bd_info = (BackendInfo *)on;
592 Debug( LDAP_DEBUG_TRACE,
593 "ppolicy_get: using default policy\n", 0, 0, 0 );
595 ppolicy_get_default( pp );
601 password_scheme( struct berval *cred, struct berval *sch )
605 assert( cred != NULL );
612 if ((cred->bv_len == 0) || (cred->bv_val == NULL) ||
613 (cred->bv_val[0] != '{')) return LDAP_OTHER;
615 for(e = 1; cred->bv_val[e] && cred->bv_val[e] != '}'; e++);
616 if (cred->bv_val[e]) {
618 rc = lutil_passwd_scheme( cred->bv_val );
621 sch->bv_val = cred->bv_val;
631 check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyError *err, Entry *e, char **txt )
633 int rc = LDAP_SUCCESS, ok = LDAP_SUCCESS;
637 assert( cred != NULL );
638 assert( pp != NULL );
639 assert( txt != NULL );
645 if ((cred->bv_len == 0) || (pp->pwdMinLength > cred->bv_len)) {
646 rc = LDAP_CONSTRAINT_VIOLATION;
647 if ( err ) *err = PP_passwordTooShort;
652 * We need to know if the password is already hashed - if so
653 * what scheme is it. The reason being that the "hash" of
654 * {cleartext} still allows us to check the password.
656 rc = password_scheme( cred, &sch );
657 if (rc == LDAP_SUCCESS) {
658 if ((sch.bv_val) && (strncasecmp( sch.bv_val, "{cleartext}",
659 sch.bv_len ) == 0)) {
661 * We can check the cleartext "hash"
663 ptr = cred->bv_val + sch.bv_len;
665 /* everything else, we can't check */
666 if (pp->pwdCheckQuality == 2) {
667 rc = LDAP_CONSTRAINT_VIOLATION;
668 if (err) *err = PP_insufficientPasswordQuality;
672 * We can't check the syntax of the password, but it's not
673 * mandatory (according to the policy), so we return success.
682 if (pp->pwdCheckModule[0]) {
687 if ((mod = lt_dlopen( pp->pwdCheckModule )) == NULL) {
690 Debug(LDAP_DEBUG_ANY,
691 "check_password_quality: lt_dlopen failed: (%s) %s.\n",
692 pp->pwdCheckModule, err, 0 );
693 ok = LDAP_OTHER; /* internal error */
695 /* FIXME: the error message ought to be passed thru a
696 * struct berval, with preallocated buffer and size
697 * passed in. Module can still allocate a buffer for
698 * it if the provided one is too small.
700 int (*prog)( char *passwd, char **text, Entry *ent );
702 if ((prog = lt_dlsym( mod, "check_password" )) == NULL) {
705 Debug(LDAP_DEBUG_ANY,
706 "check_password_quality: lt_dlsym failed: (%s) %s.\n",
707 pp->pwdCheckModule, err, 0 );
710 ldap_pvt_thread_mutex_lock( &chk_syntax_mutex );
711 ok = prog( ptr, txt, e );
712 ldap_pvt_thread_mutex_unlock( &chk_syntax_mutex );
713 if (ok != LDAP_SUCCESS) {
714 Debug(LDAP_DEBUG_ANY,
715 "check_password_quality: module error: (%s) %s.[%d]\n",
716 pp->pwdCheckModule, *txt ? *txt : "", ok );
723 Debug(LDAP_DEBUG_ANY, "check_password_quality: external modules not "
724 "supported. pwdCheckModule ignored.\n", 0, 0, 0);
725 #endif /* SLAPD_MODULES */
729 if (ok != LDAP_SUCCESS) {
730 rc = LDAP_CONSTRAINT_VIOLATION;
731 if (err) *err = PP_insufficientPasswordQuality;
738 parse_pwdhistory( struct berval *bv, char **oid, time_t *oldtime, struct berval *oldpw )
741 struct berval nv, npw;
744 assert (bv && (bv->bv_len > 0) && (bv->bv_val) && oldtime && oldpw );
749 *oldtime = (time_t)-1;
752 ber_dupbv( &nv, bv );
754 /* first get the time field */
755 for ( i = 0; (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
757 if ( i == nv.bv_len ) {
758 goto exit_failure; /* couldn't locate the '#' separator */
760 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
762 *oldtime = parse_time( ptr );
763 if (*oldtime == (time_t)-1) {
767 /* get the OID field */
768 for (ptr = &(nv.bv_val[i]); (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
770 if ( i == nv.bv_len ) {
771 goto exit_failure; /* couldn't locate the '#' separator */
773 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
775 *oid = ber_strdup( ptr );
778 /* get the length field */
779 for ( ptr = &(nv.bv_val[i]); (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
781 if ( i == nv.bv_len ) {
782 goto exit_failure; /* couldn't locate the '#' separator */
784 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
785 oldpw->bv_len = strtol( ptr, NULL, 10 );
786 if (errno == ERANGE) {
790 /* lastly, get the octets of the string */
791 for ( j = i, ptr = &(nv.bv_val[i]); i < nv.bv_len; i++ )
793 if ( i - j != oldpw->bv_len) {
794 goto exit_failure; /* length is wrong */
798 npw.bv_len = oldpw->bv_len;
799 ber_dupbv( oldpw, &npw );
800 ber_memfree( nv.bv_val );
809 if ( oldpw->bv_val ) {
810 ber_memfree( oldpw->bv_val);
813 ber_memfree( nv.bv_val );
819 add_to_pwd_history( pw_hist **l, time_t t,
820 struct berval *oldpw, struct berval *bv )
822 pw_hist *p, *p1, *p2;
826 p = ch_malloc( sizeof( pw_hist ));
828 ber_dupbv( &p->bv, bv );
833 /* degenerate case */
838 * advance p1 and p2 such that p1 is the node before the
839 * new one, and p2 is the node after it
841 for (p1 = NULL, p2 = *l; p2 && p2->t <= t; p1 = p2, p2=p2->next );
843 if (p1 == NULL) { *l = p; return; }
847 #ifndef MAX_PWD_HISTORY_SZ
848 #define MAX_PWD_HISTORY_SZ 1024
849 #endif /* MAX_PWD_HISTORY_SZ */
852 make_pwd_history_value( char *timebuf, struct berval *bv, Attribute *pa )
854 char str[ MAX_PWD_HISTORY_SZ ];
857 snprintf( str, MAX_PWD_HISTORY_SZ,
858 "%s#%s#%lu#", timebuf,
859 pa->a_desc->ad_type->sat_syntax->ssyn_oid,
860 (unsigned long) pa->a_nvals[0].bv_len );
861 str[MAX_PWD_HISTORY_SZ-1] = 0;
865 * We have to assume that the string is a string of octets,
866 * not readable characters. In reality, yes, it probably is
867 * a readable (ie, base64) string, but we can't count on that
868 * Hence, while the first 3 fields of the password history
869 * are definitely readable (a timestamp, an OID and an integer
870 * length), the remaining octets of the actual password
871 * are deemed to be binary data.
873 AC_MEMCPY( str + nlen, pa->a_nvals[0].bv_val, pa->a_nvals[0].bv_len );
874 nlen += pa->a_nvals[0].bv_len;
875 bv->bv_val = ch_malloc( nlen + 1 );
876 AC_MEMCPY( bv->bv_val, str, nlen );
877 bv->bv_val[nlen] = '\0';
882 free_pwd_history_list( pw_hist **l )
889 pw_hist *pp = p->next;
899 typedef struct ppbind {
903 LDAPControl **oldctrls;
905 LDAPPasswordPolicyError pErr;
910 ctrls_cleanup( Operation *op, SlapReply *rs, LDAPControl **oldctrls )
914 assert( rs->sr_ctrls != NULL );
915 assert( rs->sr_ctrls[0] != NULL );
917 for ( n = 0; rs->sr_ctrls[n]; n++ ) {
918 if ( rs->sr_ctrls[n]->ldctl_oid == ppolicy_ctrl_oid ) {
919 op->o_tmpfree( rs->sr_ctrls[n], op->o_tmpmemctx );
920 rs->sr_ctrls[n] = (LDAPControl *)(-1);
925 if ( rs->sr_ctrls[n] == NULL ) {
929 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
931 rs->sr_ctrls = oldctrls;
935 ppolicy_ctrls_cleanup( Operation *op, SlapReply *rs )
937 ppbind *ppb = op->o_callback->sc_private;
938 if ( ppb->send_ctrl ) {
939 ctrls_cleanup( op, rs, ppb->oldctrls );
941 return SLAP_CB_CONTINUE;
945 ppolicy_bind_response( Operation *op, SlapReply *rs )
947 ppbind *ppb = op->o_callback->sc_private;
948 slap_overinst *on = ppb->on;
949 Modifications *mod = ppb->mod, *m;
951 int ngut = -1, warn = -1, age, rc;
953 time_t now, pwtime = (time_t)-1;
954 struct lutil_tm now_tm;
955 struct lutil_timet now_usec;
956 char nowstr[ LDAP_LUTIL_GENTIME_BUFSIZE ];
957 char nowstr_usec[ LDAP_LUTIL_GENTIME_BUFSIZE+8 ];
958 struct berval timestamp, timestamp_usec;
959 BackendInfo *bi = op->o_bd->bd_info;
962 /* If we already know it's locked, just get on with it */
963 if ( ppb->pErr != PP_noError ) {
967 op->o_bd->bd_info = (BackendInfo *)on->on_info;
968 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
969 op->o_bd->bd_info = bi;
971 if ( rc != LDAP_SUCCESS ) {
972 return SLAP_CB_CONTINUE;
975 ldap_pvt_gettime(&now_tm); /* stored for later consideration */
976 lutil_tm2time(&now_tm, &now_usec);
977 now = now_usec.tt_sec;
978 timestamp.bv_val = nowstr;
979 timestamp.bv_len = sizeof(nowstr);
980 slap_timestamp( &now, ×tamp );
982 /* Separate timestamp for pwdFailureTime with microsecond granularity */
983 strcpy(nowstr_usec, nowstr);
984 timestamp_usec.bv_val = nowstr_usec;
985 timestamp_usec.bv_len = timestamp.bv_len;
986 snprintf( timestamp_usec.bv_val + timestamp_usec.bv_len-1, sizeof(".123456Z"), ".%06dZ", now_usec.tt_usec );
987 timestamp_usec.bv_len += STRLENOF(".123456");
989 if ( rs->sr_err == LDAP_INVALID_CREDENTIALS ) {
992 m = ch_calloc( sizeof(Modifications), 1 );
993 m->sml_op = LDAP_MOD_ADD;
995 m->sml_type = ad_pwdFailureTime->ad_cname;
996 m->sml_desc = ad_pwdFailureTime;
998 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
999 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
1001 ber_dupbv( &m->sml_values[0], ×tamp_usec );
1002 ber_dupbv( &m->sml_nvalues[0], ×tamp_usec );
1007 * Count the pwdFailureTimes - if it's
1008 * greater than the policy pwdMaxFailure,
1009 * then lock the account.
1011 if ((a = attr_find( e->e_attrs, ad_pwdFailureTime )) != NULL) {
1012 for(i=0; a->a_nvals[i].bv_val; i++) {
1015 * If the interval is 0, then failures
1016 * stay on the record until explicitly
1017 * reset by successful authentication.
1019 if (ppb->pp.pwdFailureCountInterval == 0) {
1022 parse_time(a->a_nvals[i].bv_val) +
1023 ppb->pp.pwdFailureCountInterval) {
1028 * We only count those failures
1029 * which are not due to expire.
1032 /* Do we have too many timestamps? If so, delete some values.
1033 * We don't bother to sort the values here. OpenLDAP keeps the
1034 * values in order by default. Fundamentally, relying on the
1035 * information here is wrong anyway; monitoring systems should
1036 * be tracking Bind failures in syslog, not here.
1038 if (a->a_numvals >= ppb->pp.pwdMaxRecordedFailure) {
1039 int j = ppb->pp.pwdMaxRecordedFailure-1;
1040 /* If more than 2x, cheaper to perform a Replace */
1041 if (a->a_numvals >= 2 * ppb->pp.pwdMaxRecordedFailure) {
1042 struct berval v, nv;
1044 /* Change the mod we constructed above */
1045 m->sml_op = LDAP_MOD_REPLACE;
1046 m->sml_numvals = ppb->pp.pwdMaxRecordedFailure;
1047 v = m->sml_values[0];
1048 nv = m->sml_nvalues[0];
1049 ch_free(m->sml_values);
1050 ch_free(m->sml_nvalues);
1051 m->sml_values = ch_calloc( sizeof(struct berval), ppb->pp.pwdMaxRecordedFailure+1 );
1052 m->sml_nvalues = ch_calloc( sizeof(struct berval), ppb->pp.pwdMaxRecordedFailure+1 );
1053 for (i=0; i<j; i++) {
1054 ber_dupbv(&m->sml_values[i], &a->a_vals[a->a_numvals-j+i]);
1055 ber_dupbv(&m->sml_nvalues[i], &a->a_nvals[a->a_numvals-j+i]);
1057 m->sml_values[i] = v;
1058 m->sml_nvalues[i] = nv;
1060 /* else just delete some */
1061 m = ch_calloc( sizeof(Modifications), 1 );
1062 m->sml_op = LDAP_MOD_DELETE;
1063 m->sml_type = ad_pwdFailureTime->ad_cname;
1064 m->sml_desc = ad_pwdFailureTime;
1065 m->sml_numvals = a->a_numvals - j;
1066 m->sml_values = ch_calloc( sizeof(struct berval), m->sml_numvals+1 );
1067 m->sml_nvalues = ch_calloc( sizeof(struct berval), m->sml_numvals+1 );
1068 for (i=0; i<m->sml_numvals; i++) {
1069 ber_dupbv(&m->sml_values[i], &a->a_vals[i]);
1070 ber_dupbv(&m->sml_nvalues[i], &a->a_nvals[i]);
1078 if ((ppb->pp.pwdMaxFailure > 0) &&
1079 (fc >= ppb->pp.pwdMaxFailure - 1)) {
1082 * We subtract 1 from the failure max
1083 * because the new failure entry hasn't
1084 * made it to the entry yet.
1086 m = ch_calloc( sizeof(Modifications), 1 );
1087 m->sml_op = LDAP_MOD_REPLACE;
1089 m->sml_type = ad_pwdAccountLockedTime->ad_cname;
1090 m->sml_desc = ad_pwdAccountLockedTime;
1092 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
1093 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
1094 ber_dupbv( &m->sml_values[0], ×tamp );
1095 ber_dupbv( &m->sml_nvalues[0], ×tamp );
1099 } else if ( rs->sr_err == LDAP_SUCCESS ) {
1100 if ((a = attr_find( e->e_attrs, ad_pwdChangedTime )) != NULL)
1101 pwtime = parse_time( a->a_nvals[0].bv_val );
1103 /* delete all pwdFailureTimes */
1104 if ( attr_find( e->e_attrs, ad_pwdFailureTime )) {
1105 m = ch_calloc( sizeof(Modifications), 1 );
1106 m->sml_op = LDAP_MOD_DELETE;
1108 m->sml_type = ad_pwdFailureTime->ad_cname;
1109 m->sml_desc = ad_pwdFailureTime;
1115 * check to see if the password must be changed
1117 if ( ppb->pp.pwdMustChange &&
1118 (a = attr_find( e->e_attrs, ad_pwdReset )) &&
1119 bvmatch( &a->a_nvals[0], &slap_true_bv ) )
1122 * need to inject client controls here to give
1123 * more information. For the moment, we ensure
1124 * that we are disallowed from doing anything
1125 * other than change password.
1127 if ( ppb->set_restrict ) {
1128 ber_dupbv( &pwcons[op->o_conn->c_conn_idx].dn,
1129 &op->o_conn->c_ndn );
1132 ppb->pErr = PP_changeAfterReset;
1136 * the password does not need to be changed, so
1137 * we now check whether the password has expired.
1139 * We can skip this bit if passwords don't age in
1140 * the policy. Also, if there was no pwdChangedTime
1141 * attribute in the entry, the password never expires.
1143 if (ppb->pp.pwdMaxAge == 0) goto grace;
1145 if (pwtime != (time_t)-1) {
1147 * Check: was the last change time of
1148 * the password older than the maximum age
1149 * allowed. (Ignore case 2 from I-D, it's just silly.)
1151 if (now - pwtime > ppb->pp.pwdMaxAge ) pwExpired = 1;
1156 if (!pwExpired) goto check_expiring_password;
1158 if ((a = attr_find( e->e_attrs, ad_pwdGraceUseTime )) == NULL)
1159 ngut = ppb->pp.pwdGraceAuthNLimit;
1161 for(ngut=0; a->a_nvals[ngut].bv_val; ngut++);
1162 ngut = ppb->pp.pwdGraceAuthNLimit - ngut;
1166 * ngut is the number of remaining grace logins
1168 Debug( LDAP_DEBUG_ANY,
1169 "ppolicy_bind: Entry %s has an expired password: %d grace logins\n",
1170 e->e_name.bv_val, ngut, 0);
1173 ppb->pErr = PP_passwordExpired;
1174 rs->sr_err = LDAP_INVALID_CREDENTIALS;
1179 * Add a grace user time to the entry
1181 m = ch_calloc( sizeof(Modifications), 1 );
1182 m->sml_op = LDAP_MOD_ADD;
1184 m->sml_type = ad_pwdGraceUseTime->ad_cname;
1185 m->sml_desc = ad_pwdGraceUseTime;
1187 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
1188 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
1189 ber_dupbv( &m->sml_values[0], ×tamp );
1190 ber_dupbv( &m->sml_nvalues[0], ×tamp );
1194 check_expiring_password:
1196 * Now we need to check to see
1197 * if it is about to expire, and if so, should the user
1198 * be warned about it in the password policy control.
1200 * If the password has expired, and we're in the grace period, then
1201 * we don't need to do this bit. Similarly, if we don't have password
1202 * aging, then there's no need to do this bit either.
1204 if ((ppb->pp.pwdMaxAge < 1) || (pwExpired) || (ppb->pp.pwdExpireWarning < 1))
1207 age = (int)(now - pwtime);
1210 * We know that there is a password Change Time attribute - if
1211 * there wasn't, then the pwdExpired value would be true, unless
1212 * there is no password aging - and if there is no password aging,
1213 * then this section isn't called anyway - you can't have an
1214 * expiring password if there's no limit to expire.
1216 if (ppb->pp.pwdMaxAge - age < ppb->pp.pwdExpireWarning ) {
1218 * Set the warning value.
1220 warn = ppb->pp.pwdMaxAge - age; /* seconds left until expiry */
1221 if (warn < 0) warn = 0; /* something weird here - why is pwExpired not set? */
1223 Debug( LDAP_DEBUG_ANY,
1224 "ppolicy_bind: Setting warning for password expiry for %s = %d seconds\n",
1225 op->o_req_dn.bv_val, warn, 0 );
1230 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1231 be_entry_release_r( op, e );
1235 Operation op2 = *op;
1236 SlapReply r2 = { REP_RESULT };
1237 slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
1238 pp_info *pi = on->on_bi.bi_private;
1239 LDAPControl c, *ca[2];
1241 op2.o_tag = LDAP_REQ_MODIFY;
1242 op2.o_callback = &cb;
1243 op2.orm_modlist = mod;
1244 op2.orm_no_opattrs = 0;
1245 op2.o_dn = op->o_bd->be_rootdn;
1246 op2.o_ndn = op->o_bd->be_rootndn;
1248 /* If this server is a shadow and forward_updates is true,
1249 * use the frontend to perform this modify. That will trigger
1250 * the update referral, which can then be forwarded by the
1251 * chain overlay. Obviously the updateref and chain overlay
1252 * must be configured appropriately for this to be useful.
1254 if ( SLAP_SHADOW( op->o_bd ) && pi->forward_updates ) {
1255 op2.o_bd = frontendDB;
1257 /* Must use Relax control since these are no-user-mod */
1258 op2.o_relax = SLAP_CONTROL_CRITICAL;
1262 BER_BVZERO( &c.ldctl_value );
1263 c.ldctl_iscritical = 1;
1264 c.ldctl_oid = LDAP_CONTROL_RELAX;
1266 /* If not forwarding, don't update opattrs and don't replicate */
1267 if ( SLAP_SINGLE_SHADOW( op->o_bd )) {
1268 op2.orm_no_opattrs = 1;
1269 op2.o_dont_replicate = 1;
1271 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
1273 rc = op2.o_bd->be_modify( &op2, &r2 );
1274 slap_mods_free( mod, 1 );
1277 if ( ppb->send_ctrl ) {
1278 LDAPControl *ctrl = NULL;
1279 pp_info *pi = on->on_bi.bi_private;
1281 /* Do we really want to tell that the account is locked? */
1282 if ( ppb->pErr == PP_accountLocked && !pi->use_lockout ) {
1283 ppb->pErr = PP_noError;
1285 ctrl = create_passcontrol( op, warn, ngut, ppb->pErr );
1286 ppb->oldctrls = add_passcontrol( op, rs, ctrl );
1287 op->o_callback->sc_cleanup = ppolicy_ctrls_cleanup;
1289 op->o_bd->bd_info = bi;
1290 return SLAP_CB_CONTINUE;
1294 ppolicy_bind( Operation *op, SlapReply *rs )
1296 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1298 /* Reset lockout status on all Bind requests */
1299 if ( !BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
1300 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1301 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1304 /* Root bypasses policy */
1305 if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn )) {
1311 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1312 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
1314 if ( rc != LDAP_SUCCESS ) {
1315 return SLAP_CB_CONTINUE;
1318 cb = op->o_tmpcalloc( sizeof(ppbind)+sizeof(slap_callback),
1319 1, op->o_tmpmemctx );
1320 ppb = (ppbind *)(cb+1);
1322 ppb->pErr = PP_noError;
1323 ppb->set_restrict = 1;
1325 /* Setup a callback so we can munge the result */
1327 cb->sc_response = ppolicy_bind_response;
1328 cb->sc_next = op->o_callback->sc_next;
1329 cb->sc_private = ppb;
1330 op->o_callback->sc_next = cb;
1332 /* Did we receive a password policy request control? */
1333 if ( op->o_ctrlflag[ppolicy_cid] ) {
1337 op->o_bd->bd_info = (BackendInfo *)on;
1338 ppolicy_get( op, e, &ppb->pp );
1340 rc = account_locked( op, e, &ppb->pp, &ppb->mod );
1342 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1343 be_entry_release_r( op, e );
1346 ppb->pErr = PP_accountLocked;
1347 send_ldap_error( op, rs, LDAP_INVALID_CREDENTIALS, NULL );
1353 return SLAP_CB_CONTINUE;
1356 /* Reset the restricted info for the next session on this connection */
1358 ppolicy_connection_destroy( BackendDB *bd, Connection *conn )
1360 if ( pwcons && !BER_BVISEMPTY( &pwcons[conn->c_conn_idx].dn )) {
1361 ch_free( pwcons[conn->c_conn_idx].dn.bv_val );
1362 BER_BVZERO( &pwcons[conn->c_conn_idx].dn );
1364 return SLAP_CB_CONTINUE;
1367 /* Check if this connection is restricted */
1373 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1376 /* Did we receive a password policy request control? */
1377 if ( op->o_ctrlflag[ppolicy_cid] ) {
1381 if ( op->o_conn && !BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
1382 LDAPControl **oldctrls;
1383 /* if the current authcDN doesn't match the one we recorded,
1384 * then an intervening Bind has succeeded and the restriction
1385 * no longer applies. (ITS#4516)
1387 if ( !dn_match( &op->o_conn->c_ndn,
1388 &pwcons[op->o_conn->c_conn_idx].dn )) {
1389 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1390 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1391 return SLAP_CB_CONTINUE;
1394 Debug( LDAP_DEBUG_TRACE,
1395 "connection restricted to password changing only\n", 0, 0, 0);
1397 LDAPControl *ctrl = NULL;
1398 ctrl = create_passcontrol( op, -1, -1, PP_changeAfterReset );
1399 oldctrls = add_passcontrol( op, rs, ctrl );
1401 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1402 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
1403 "Operations are restricted to bind/unbind/abandon/StartTLS/modify password" );
1405 ctrls_cleanup( op, rs, oldctrls );
1410 return SLAP_CB_CONTINUE;
1414 ppolicy_compare_response(
1418 /* map compare responses to bind responses */
1419 if ( rs->sr_err == LDAP_COMPARE_TRUE )
1420 rs->sr_err = LDAP_SUCCESS;
1421 else if ( rs->sr_err == LDAP_COMPARE_FALSE )
1422 rs->sr_err = LDAP_INVALID_CREDENTIALS;
1424 ppolicy_bind_response( op, rs );
1426 /* map back to compare */
1427 if ( rs->sr_err == LDAP_SUCCESS )
1428 rs->sr_err = LDAP_COMPARE_TRUE;
1429 else if ( rs->sr_err == LDAP_INVALID_CREDENTIALS )
1430 rs->sr_err = LDAP_COMPARE_FALSE;
1432 return SLAP_CB_CONTINUE;
1440 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1442 if ( ppolicy_restrict( op, rs ) != SLAP_CB_CONTINUE )
1445 /* Did we receive a password policy request control?
1446 * Are we testing the userPassword?
1448 if ( op->o_ctrlflag[ppolicy_cid] &&
1449 op->orc_ava->aa_desc == slap_schema.si_ad_userPassword ) {
1455 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1456 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
1458 if ( rc != LDAP_SUCCESS ) {
1459 return SLAP_CB_CONTINUE;
1462 cb = op->o_tmpcalloc( sizeof(ppbind)+sizeof(slap_callback),
1463 1, op->o_tmpmemctx );
1464 ppb = (ppbind *)(cb+1);
1466 ppb->pErr = PP_noError;
1468 /* failures here don't lockout the connection */
1469 ppb->set_restrict = 0;
1471 /* Setup a callback so we can munge the result */
1473 cb->sc_response = ppolicy_compare_response;
1474 cb->sc_next = op->o_callback->sc_next;
1475 cb->sc_private = ppb;
1476 op->o_callback->sc_next = cb;
1478 op->o_bd->bd_info = (BackendInfo *)on;
1479 ppolicy_get( op, e, &ppb->pp );
1481 rc = account_locked( op, e, &ppb->pp, &ppb->mod );
1483 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1484 be_entry_release_r( op, e );
1487 ppb->pErr = PP_accountLocked;
1488 send_ldap_error( op, rs, LDAP_COMPARE_FALSE, NULL );
1492 return SLAP_CB_CONTINUE;
1500 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1501 pp_info *pi = on->on_bi.bi_private;
1506 if ( ppolicy_restrict( op, rs ) != SLAP_CB_CONTINUE )
1509 /* If this is a replica, assume the master checked everything */
1510 if ( be_shadow_update( op ))
1511 return SLAP_CB_CONTINUE;
1513 /* Check for password in entry */
1514 if ((pa = attr_find( op->oq_add.rs_e->e_attrs,
1515 slap_schema.si_ad_userPassword )))
1517 assert( pa->a_vals != NULL );
1518 assert( !BER_BVISNULL( &pa->a_vals[ 0 ] ) );
1520 if ( !BER_BVISNULL( &pa->a_vals[ 1 ] ) ) {
1521 send_ldap_error( op, rs, LDAP_CONSTRAINT_VIOLATION, "Password policy only allows one password value" );
1526 * new entry contains a password - if we're not the root user
1527 * then we need to check that the password fits in with the
1528 * security policy for the new entry.
1530 ppolicy_get( op, op->ora_e, &pp );
1531 if (pp.pwdCheckQuality > 0 && !be_isroot( op )) {
1532 struct berval *bv = &(pa->a_vals[0]);
1533 int rc, send_ctrl = 0;
1534 LDAPPasswordPolicyError pErr = PP_noError;
1537 /* Did we receive a password policy request control? */
1538 if ( op->o_ctrlflag[ppolicy_cid] ) {
1541 rc = check_password_quality( bv, &pp, &pErr, op->ora_e, &txt );
1542 if (rc != LDAP_SUCCESS) {
1543 LDAPControl **oldctrls = NULL;
1544 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1546 LDAPControl *ctrl = NULL;
1547 ctrl = create_passcontrol( op, -1, -1, pErr );
1548 oldctrls = add_passcontrol( op, rs, ctrl );
1550 send_ldap_error( op, rs, rc, txt ? txt : "Password fails quality checking policy" );
1555 ctrls_cleanup( op, rs, oldctrls );
1561 * A controversial bit. We hash cleartext
1562 * passwords provided via add and modify operations
1563 * You're not really supposed to do this, since
1564 * the X.500 model says "store attributes" as they
1565 * get provided. By default, this is what we do
1567 * But if the hash_passwords flag is set, we hash
1568 * any cleartext password attribute values via the
1569 * default password hashing scheme.
1571 if ((pi->hash_passwords) &&
1572 (password_scheme( &(pa->a_vals[0]), NULL ) != LDAP_SUCCESS)) {
1575 slap_passwd_hash( &(pa->a_vals[0]), &hpw, &txt );
1576 if (hpw.bv_val == NULL) {
1578 * hashing didn't work. Emit an error.
1580 rs->sr_err = LDAP_OTHER;
1582 send_ldap_error( op, rs, LDAP_OTHER, "Password hashing failed" );
1586 memset( pa->a_vals[0].bv_val, 0, pa->a_vals[0].bv_len);
1587 ber_memfree( pa->a_vals[0].bv_val );
1588 pa->a_vals[0].bv_val = hpw.bv_val;
1589 pa->a_vals[0].bv_len = hpw.bv_len;
1592 /* If password aging is in effect, set the pwdChangedTime */
1593 if ( pp.pwdMaxAge || pp.pwdMinAge ) {
1594 struct berval timestamp;
1595 char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
1596 time_t now = slap_get_time();
1598 timestamp.bv_val = timebuf;
1599 timestamp.bv_len = sizeof(timebuf);
1600 slap_timestamp( &now, ×tamp );
1602 attr_merge_one( op->ora_e, ad_pwdChangedTime, ×tamp, ×tamp );
1605 return SLAP_CB_CONTINUE;
1609 ppolicy_mod_cb( Operation *op, SlapReply *rs )
1611 slap_callback *sc = op->o_callback;
1612 op->o_callback = sc->sc_next;
1613 if ( rs->sr_err == LDAP_SUCCESS ) {
1614 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1615 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1617 op->o_tmpfree( sc, op->o_tmpmemctx );
1618 return SLAP_CB_CONTINUE;
1622 ppolicy_modify( Operation *op, SlapReply *rs )
1624 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1625 pp_info *pi = on->on_bi.bi_private;
1626 int i, rc, mod_pw_only, pwmod, pwmop = -1, deladd,
1629 Modifications *mods = NULL, *modtail = NULL,
1630 *ml, *delmod, *addmod;
1631 Attribute *pa, *ha, at;
1633 pw_hist *tl = NULL, *p;
1634 int zapReset, send_ctrl = 0, free_txt = 0;
1636 struct berval newpw = BER_BVNULL, oldpw = BER_BVNULL,
1638 LDAPPasswordPolicyError pErr = PP_noError;
1639 LDAPControl *ctrl = NULL;
1640 LDAPControl **oldctrls = NULL;
1642 int got_del_grace = 0, got_del_lock = 0, got_pw = 0, got_del_fail = 0;
1643 int got_changed = 0, got_history = 0;
1645 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1646 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
1647 op->o_bd->bd_info = (BackendInfo *)on;
1649 if ( rc != LDAP_SUCCESS ) return SLAP_CB_CONTINUE;
1651 /* If this is a replica, we may need to tweak some of the
1652 * master's modifications. Otherwise, just pass it through.
1654 if ( be_shadow_update( op )) {
1655 Modifications **prev;
1656 Attribute *a_grace, *a_lock, *a_fail;
1658 a_grace = attr_find( e->e_attrs, ad_pwdGraceUseTime );
1659 a_lock = attr_find( e->e_attrs, ad_pwdAccountLockedTime );
1660 a_fail = attr_find( e->e_attrs, ad_pwdFailureTime );
1662 for( prev = &op->orm_modlist, ml = *prev; ml; ml = *prev ) {
1664 if ( ml->sml_desc == slap_schema.si_ad_userPassword )
1667 /* If we're deleting an attr that didn't exist,
1668 * drop this delete op
1670 if ( ml->sml_op == LDAP_MOD_DELETE ) {
1673 if ( ml->sml_desc == ad_pwdGraceUseTime ) {
1674 if ( !a_grace || got_del_grace ) {
1680 if ( ml->sml_desc == ad_pwdAccountLockedTime ) {
1681 if ( !a_lock || got_del_lock ) {
1687 if ( ml->sml_desc == ad_pwdFailureTime ) {
1688 if ( !a_fail || got_del_fail ) {
1695 *prev = ml->sml_next;
1696 ml->sml_next = NULL;
1697 slap_mods_free( ml, 1 );
1701 prev = &ml->sml_next;
1704 /* If we're resetting the password, make sure grace, accountlock,
1705 * and failure also get removed.
1708 if ( a_grace && !got_del_grace ) {
1709 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1710 ml->sml_op = LDAP_MOD_DELETE;
1711 ml->sml_flags = SLAP_MOD_INTERNAL;
1712 ml->sml_type.bv_val = NULL;
1713 ml->sml_desc = ad_pwdGraceUseTime;
1714 ml->sml_numvals = 0;
1715 ml->sml_values = NULL;
1716 ml->sml_nvalues = NULL;
1717 ml->sml_next = NULL;
1719 prev = &ml->sml_next;
1721 if ( a_lock && !got_del_lock ) {
1722 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1723 ml->sml_op = LDAP_MOD_DELETE;
1724 ml->sml_flags = SLAP_MOD_INTERNAL;
1725 ml->sml_type.bv_val = NULL;
1726 ml->sml_desc = ad_pwdAccountLockedTime;
1727 ml->sml_numvals = 0;
1728 ml->sml_values = NULL;
1729 ml->sml_nvalues = NULL;
1730 ml->sml_next = NULL;
1733 if ( a_fail && !got_del_fail ) {
1734 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1735 ml->sml_op = LDAP_MOD_DELETE;
1736 ml->sml_flags = SLAP_MOD_INTERNAL;
1737 ml->sml_type.bv_val = NULL;
1738 ml->sml_desc = ad_pwdFailureTime;
1739 ml->sml_numvals = 0;
1740 ml->sml_values = NULL;
1741 ml->sml_nvalues = NULL;
1742 ml->sml_next = NULL;
1746 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1747 be_entry_release_r( op, e );
1748 return SLAP_CB_CONTINUE;
1751 /* Did we receive a password policy request control? */
1752 if ( op->o_ctrlflag[ppolicy_cid] ) {
1756 /* See if this is a pwdModify exop. If so, we can
1757 * access the plaintext passwords from that request.
1762 for ( sc = op->o_callback; sc; sc=sc->sc_next ) {
1763 if ( sc->sc_response == slap_null_cb &&
1765 req_pwdexop_s *qpw = sc->sc_private;
1766 newpw = qpw->rs_new;
1767 oldpw = qpw->rs_old;
1774 ppolicy_get( op, e, &pp );
1776 for ( ml = op->orm_modlist,
1777 pwmod = 0, mod_pw_only = 1,
1778 deladd = 0, delmod = NULL,
1781 ml != NULL; modtail = ml, ml = ml->sml_next )
1783 if ( ml->sml_desc == pp.ad ) {
1786 if ((deladd == 0) && (ml->sml_op == LDAP_MOD_DELETE) &&
1787 (ml->sml_values) && !BER_BVISNULL( &ml->sml_values[0] ))
1793 if ((ml->sml_op == LDAP_MOD_ADD) ||
1794 (ml->sml_op == LDAP_MOD_REPLACE))
1796 if ( ml->sml_values && !BER_BVISNULL( &ml->sml_values[0] )) {
1800 /* FIXME: there's no easy way to ensure
1801 * that add does not cause multiple
1802 * userPassword values; one way (that
1803 * would be consistent with the single
1804 * password constraint) would be to turn
1805 * add into replace); another would be
1808 * Let's check at least that a single value
1811 if ( addmod || !BER_BVISNULL( &ml->sml_values[ 1 ] ) ) {
1812 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1813 rs->sr_text = "Password policy only allows one password value";
1814 goto return_results;
1819 /* replace can have no values, add cannot */
1820 assert( ml->sml_op == LDAP_MOD_REPLACE );
1824 } else if ( !(ml->sml_flags & SLAP_MOD_INTERNAL) && !is_at_operational( ml->sml_desc->ad_type ) ) {
1826 /* modifying something other than password */
1830 * If there is a request to explicitly add a pwdReset
1831 * attribute, then we suppress the normal behaviour on
1832 * password change, which is to remove the pwdReset
1835 * This enables an administrator to assign a new password
1836 * and place a "must reset" flag on the entry, which will
1837 * stay until the user explicitly changes his/her password.
1839 if (ml->sml_desc == ad_pwdReset ) {
1840 if ((ml->sml_op == LDAP_MOD_ADD) ||
1841 (ml->sml_op == LDAP_MOD_REPLACE))
1844 if ( ml->sml_op == LDAP_MOD_DELETE ) {
1845 if ( ml->sml_desc == ad_pwdGraceUseTime ) {
1847 } else if ( ml->sml_desc == ad_pwdAccountLockedTime ) {
1849 } else if ( ml->sml_desc == ad_pwdFailureTime ) {
1853 if ( ml->sml_desc == ad_pwdChangedTime ) {
1855 } else if (ml->sml_desc == ad_pwdHistory ) {
1860 if (!BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn ) && !mod_pw_only ) {
1861 if ( dn_match( &op->o_conn->c_ndn,
1862 &pwcons[op->o_conn->c_conn_idx].dn )) {
1863 Debug( LDAP_DEBUG_TRACE,
1864 "connection restricted to password changing only\n", 0, 0, 0 );
1865 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1866 rs->sr_text = "Operations are restricted to bind/unbind/abandon/StartTLS/modify password";
1867 pErr = PP_changeAfterReset;
1868 goto return_results;
1870 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1871 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1876 * if we have a "safe password modify policy", then we need to check if we're doing
1877 * a delete (with the old password), followed by an add (with the new password).
1879 * If we got just a delete with nothing else, just let it go. We also skip all the checks if
1880 * the root user is bound. Root can do anything, including avoid the policies.
1883 if (!pwmod) goto do_modify;
1886 * Build the password history list in ascending time order
1887 * We need this, even if the user is root, in order to maintain
1888 * the pwdHistory operational attributes properly.
1890 if (addmod && pp.pwdInHistory > 0 && (ha = attr_find( e->e_attrs, ad_pwdHistory ))) {
1891 struct berval oldpw;
1894 for(i=0; ha->a_nvals[i].bv_val; i++) {
1895 rc = parse_pwdhistory( &(ha->a_nvals[i]), NULL,
1898 if (rc != LDAP_SUCCESS) continue; /* invalid history entry */
1901 add_to_pwd_history( &tl, oldtime, &oldpw,
1902 &(ha->a_nvals[i]) );
1903 oldpw.bv_val = NULL;
1907 for(p=tl; p; p=p->next, hsize++); /* count history size */
1910 if (be_isroot( op )) goto do_modify;
1912 /* NOTE: according to draft-behera-ldap-password-policy
1913 * pwdAllowUserChange == FALSE must only prevent pwd changes
1914 * by the user the pwd belongs to (ITS#7021) */
1915 if (!pp.pwdAllowUserChange && dn_match(&op->o_req_ndn, &op->o_ndn)) {
1916 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1917 rs->sr_text = "User alteration of password is not allowed";
1918 pErr = PP_passwordModNotAllowed;
1919 goto return_results;
1922 /* Just deleting? */
1924 /* skip everything else */
1929 /* This is a pwdModify exop that provided the old pw.
1930 * We need to create a Delete mod for this old pw and
1931 * let the matching value get found later
1933 if (pp.pwdSafeModify && oldpw.bv_val ) {
1934 ml = (Modifications *)ch_calloc( sizeof( Modifications ), 1 );
1935 ml->sml_op = LDAP_MOD_DELETE;
1936 ml->sml_flags = SLAP_MOD_INTERNAL;
1937 ml->sml_desc = pp.ad;
1938 ml->sml_type = pp.ad->ad_cname;
1939 ml->sml_numvals = 1;
1940 ml->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
1941 ber_dupbv( &ml->sml_values[0], &oldpw );
1942 BER_BVZERO( &ml->sml_values[1] );
1943 ml->sml_next = op->orm_modlist;
1944 op->orm_modlist = ml;
1949 if (pp.pwdSafeModify && deladd != 2) {
1950 Debug( LDAP_DEBUG_TRACE,
1951 "change password must use DELETE followed by ADD/REPLACE\n",
1953 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1954 rs->sr_text = "Must supply old password to be changed as well as new one";
1955 pErr = PP_mustSupplyOldPassword;
1956 goto return_results;
1959 /* Check age, but only if pwdReset is not TRUE */
1960 pa = attr_find( e->e_attrs, ad_pwdReset );
1961 if ((!pa || !bvmatch( &pa->a_nvals[0], &slap_true_bv )) &&
1963 time_t pwtime = (time_t)-1, now;
1966 if ((pa = attr_find( e->e_attrs, ad_pwdChangedTime )) != NULL)
1967 pwtime = parse_time( pa->a_nvals[0].bv_val );
1968 now = slap_get_time();
1969 age = (int)(now - pwtime);
1970 if ((pwtime != (time_t)-1) && (age < pp.pwdMinAge)) {
1971 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1972 rs->sr_text = "Password is too young to change";
1973 pErr = PP_passwordTooYoung;
1974 goto return_results;
1978 /* pa is used in password history check below, be sure it's set */
1979 if ((pa = attr_find( e->e_attrs, pp.ad )) != NULL && delmod) {
1981 * we have a password to check
1983 bv = oldpw.bv_val ? &oldpw : delmod->sml_values;
1984 /* FIXME: no access checking? */
1985 rc = slap_passwd_check( op, NULL, pa, bv, &txt );
1986 if (rc != LDAP_SUCCESS) {
1987 Debug( LDAP_DEBUG_TRACE,
1988 "old password check failed: %s\n", txt, 0, 0 );
1990 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1991 rs->sr_text = "Must supply correct old password to change to new one";
1992 pErr = PP_mustSupplyOldPassword;
1993 goto return_results;
1999 * replace the delete value with the (possibly hashed)
2000 * value which is currently in the password.
2002 for ( i = 0; !BER_BVISNULL( &delmod->sml_values[i] ); i++ ) {
2003 free( delmod->sml_values[i].bv_val );
2004 BER_BVZERO( &delmod->sml_values[i] );
2006 free( delmod->sml_values );
2007 delmod->sml_values = ch_calloc( sizeof(struct berval), 2 );
2008 BER_BVZERO( &delmod->sml_values[1] );
2009 ber_dupbv( &(delmod->sml_values[0]), &(pa->a_nvals[0]) );
2013 bv = newpw.bv_val ? &newpw : &addmod->sml_values[0];
2014 if (pp.pwdCheckQuality > 0) {
2016 rc = check_password_quality( bv, &pp, &pErr, e, (char **)&txt );
2017 if (rc != LDAP_SUCCESS) {
2023 rs->sr_text = "Password fails quality checking policy";
2025 goto return_results;
2029 /* If pwdInHistory is zero, passwords may be reused */
2030 if (pa && pp.pwdInHistory > 0) {
2032 * Last check - the password history.
2034 /* FIXME: no access checking? */
2035 if (slap_passwd_check( op, NULL, pa, bv, &txt ) == LDAP_SUCCESS) {
2037 * This is bad - it means that the user is attempting
2038 * to set the password to the same as the old one.
2040 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
2041 rs->sr_text = "Password is not being changed from existing value";
2042 pErr = PP_passwordInHistory;
2043 goto return_results;
2047 * Iterate through the password history, and fail on any
2052 cr[1].bv_val = NULL;
2053 for(p=tl; p; p=p->next) {
2055 /* FIXME: no access checking? */
2056 rc = slap_passwd_check( op, NULL, &at, bv, &txt );
2058 if (rc != LDAP_SUCCESS) continue;
2060 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
2061 rs->sr_text = "Password is in history of old passwords";
2062 pErr = PP_passwordInHistory;
2063 goto return_results;
2069 struct berval timestamp;
2070 char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
2071 time_t now = slap_get_time();
2073 /* If the conn is restricted, set a callback to clear it
2074 * if the pwmod succeeds
2076 if (!BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
2077 slap_callback *sc = op->o_tmpcalloc( 1, sizeof( slap_callback ),
2079 sc->sc_next = op->o_callback;
2080 /* Must use sc_response to insure we reset on success, before
2081 * the client sees the response. Must use sc_cleanup to insure
2082 * that it gets cleaned up if sc_response is not called.
2084 sc->sc_response = ppolicy_mod_cb;
2085 sc->sc_cleanup = ppolicy_mod_cb;
2086 op->o_callback = sc;
2090 * keep the necessary pwd.. operational attributes
2095 timestamp.bv_val = timebuf;
2096 timestamp.bv_len = sizeof(timebuf);
2097 slap_timestamp( &now, ×tamp );
2100 if (pwmop != LDAP_MOD_DELETE) {
2101 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
2102 mods->sml_op = LDAP_MOD_REPLACE;
2103 mods->sml_numvals = 1;
2104 mods->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
2105 ber_dupbv( &mods->sml_values[0], ×tamp );
2106 BER_BVZERO( &mods->sml_values[1] );
2107 assert( !BER_BVISNULL( &mods->sml_values[0] ) );
2108 } else if (attr_find(e->e_attrs, ad_pwdChangedTime )) {
2109 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
2110 mods->sml_op = LDAP_MOD_DELETE;
2113 mods->sml_desc = ad_pwdChangedTime;
2114 mods->sml_flags = SLAP_MOD_INTERNAL;
2115 mods->sml_next = NULL;
2116 modtail->sml_next = mods;
2121 if (!got_del_grace && attr_find(e->e_attrs, ad_pwdGraceUseTime )) {
2122 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
2123 mods->sml_op = LDAP_MOD_DELETE;
2124 mods->sml_desc = ad_pwdGraceUseTime;
2125 mods->sml_flags = SLAP_MOD_INTERNAL;
2126 mods->sml_next = NULL;
2127 modtail->sml_next = mods;
2131 if (!got_del_lock && attr_find(e->e_attrs, ad_pwdAccountLockedTime )) {
2132 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
2133 mods->sml_op = LDAP_MOD_DELETE;
2134 mods->sml_desc = ad_pwdAccountLockedTime;
2135 mods->sml_flags = SLAP_MOD_INTERNAL;
2136 mods->sml_next = NULL;
2137 modtail->sml_next = mods;
2141 if (!got_del_fail && attr_find(e->e_attrs, ad_pwdFailureTime )) {
2142 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
2143 mods->sml_op = LDAP_MOD_DELETE;
2144 mods->sml_desc = ad_pwdFailureTime;
2145 mods->sml_flags = SLAP_MOD_INTERNAL;
2146 mods->sml_next = NULL;
2147 modtail->sml_next = mods;
2151 /* Delete the pwdReset attribute, since it's being reset */
2152 if ((zapReset) && (attr_find(e->e_attrs, ad_pwdReset ))) {
2153 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
2154 mods->sml_op = LDAP_MOD_DELETE;
2155 mods->sml_desc = ad_pwdReset;
2156 mods->sml_flags = SLAP_MOD_INTERNAL;
2157 mods->sml_next = NULL;
2158 modtail->sml_next = mods;
2162 if (!got_history && pp.pwdInHistory > 0) {
2163 if (hsize >= pp.pwdInHistory) {
2165 * We use the >= operator, since we are going to add
2166 * the existing password attribute value into the
2167 * history - thus the cardinality of history values is
2168 * about to rise by one.
2170 * If this would push it over the limit of history
2171 * values (remembering - the password policy could have
2172 * changed since the password was last altered), we must
2173 * delete at least 1 value from the pwdHistory list.
2175 * In fact, we delete '(#pwdHistory attrs - max pwd
2176 * history length) + 1' values, starting with the oldest.
2177 * This is easily evaluated, since the linked list is
2178 * created in ascending time order.
2180 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
2181 mods->sml_op = LDAP_MOD_DELETE;
2182 mods->sml_flags = SLAP_MOD_INTERNAL;
2183 mods->sml_desc = ad_pwdHistory;
2184 mods->sml_numvals = hsize - pp.pwdInHistory + 1;
2185 mods->sml_values = ch_calloc( sizeof( struct berval ),
2186 hsize - pp.pwdInHistory + 2 );
2187 BER_BVZERO( &mods->sml_values[ hsize - pp.pwdInHistory + 1 ] );
2188 for(i=0,p=tl; i < (hsize - pp.pwdInHistory + 1); i++, p=p->next) {
2189 BER_BVZERO( &mods->sml_values[i] );
2190 ber_dupbv( &(mods->sml_values[i]), &p->bv );
2192 mods->sml_next = NULL;
2193 modtail->sml_next = mods;
2196 free_pwd_history_list( &tl );
2199 * Now add the existing password into the history list.
2200 * This will be executed even if the operation is to delete
2201 * the password entirely.
2203 * This isn't in the spec explicitly, but it seems to make
2204 * sense that the password history list is the list of all
2205 * previous passwords - even if they were deleted. Thus, if
2206 * someone tries to add a historical password at some future
2207 * point, it will fail.
2209 if ((pa = attr_find( e->e_attrs, pp.ad )) != NULL) {
2210 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
2211 mods->sml_op = LDAP_MOD_ADD;
2212 mods->sml_flags = SLAP_MOD_INTERNAL;
2213 mods->sml_type.bv_val = NULL;
2214 mods->sml_desc = ad_pwdHistory;
2215 mods->sml_nvalues = NULL;
2216 mods->sml_numvals = 1;
2217 mods->sml_values = ch_calloc( sizeof( struct berval ), 2 );
2218 mods->sml_values[ 1 ].bv_val = NULL;
2219 mods->sml_values[ 1 ].bv_len = 0;
2220 make_pwd_history_value( timebuf, &mods->sml_values[0], pa );
2221 mods->sml_next = NULL;
2222 modtail->sml_next = mods;
2226 Debug( LDAP_DEBUG_TRACE,
2227 "ppolicy_modify: password attr lookup failed\n", 0, 0, 0 );
2232 * Controversial bit here. If the new password isn't hashed
2233 * (ie, is cleartext), we probably should hash it according
2234 * to the default hash. The reason for this is that we want
2235 * to use the policy if possible, but if we hash the password
2236 * before, then we're going to run into trouble when it
2237 * comes time to check the password.
2239 * Now, the right thing to do is to use the extended password
2240 * modify operation, but not all software can do this,
2241 * therefore it makes sense to hash the new password, now
2242 * we know it passes the policy requirements.
2244 * Of course, if the password is already hashed, then we
2248 if ((pi->hash_passwords) && (addmod) && !newpw.bv_val &&
2249 (password_scheme( &(addmod->sml_values[0]), NULL ) != LDAP_SUCCESS))
2251 struct berval hpw, bv;
2253 slap_passwd_hash( &(addmod->sml_values[0]), &hpw, &txt );
2254 if (hpw.bv_val == NULL) {
2256 * hashing didn't work. Emit an error.
2258 rs->sr_err = LDAP_OTHER;
2260 goto return_results;
2262 bv = addmod->sml_values[0];
2263 /* clear and discard the clear password */
2264 memset(bv.bv_val, 0, bv.bv_len);
2265 ber_memfree(bv.bv_val);
2266 addmod->sml_values[0] = hpw;
2269 op->o_bd->bd_info = (BackendInfo *)on->on_info;
2270 be_entry_release_r( op, e );
2271 return SLAP_CB_CONTINUE;
2274 free_pwd_history_list( &tl );
2275 op->o_bd->bd_info = (BackendInfo *)on->on_info;
2276 be_entry_release_r( op, e );
2278 ctrl = create_passcontrol( op, -1, -1, pErr );
2279 oldctrls = add_passcontrol( op, rs, ctrl );
2281 send_ldap_result( op, rs );
2283 free( (char *)txt );
2288 if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
2289 op->o_tmpfree( oldctrls, op->o_tmpmemctx );
2292 rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
2295 ctrls_cleanup( op, rs, oldctrls );
2307 if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
2308 rs->sr_text = "passwordPolicyRequest control value not absent";
2309 return LDAP_PROTOCOL_ERROR;
2311 op->o_ctrlflag[ppolicy_cid] = ctrl->ldctl_iscritical
2312 ? SLAP_CONTROL_CRITICAL
2313 : SLAP_CONTROL_NONCRITICAL;
2315 return LDAP_SUCCESS;
2325 AttributeDescription *ad = NULL;
2329 code = slap_bv2ad( val, &ad, &err );
2331 ber_dupbv_x( out, &ad->ad_type->sat_cname, ctx );
2345 AttributeDescription *ad = NULL;
2349 code = slap_bv2ad( val, &ad, &err );
2351 ber_str2bv_x( ad->ad_type->sat_oid, 0, 1, out, ctx );
2362 slap_overinst *on = (slap_overinst *) be->bd_info;
2364 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
2365 /* do not allow slapo-ppolicy to be global by now (ITS#5858) */
2367 snprintf( cr->msg, sizeof(cr->msg),
2368 "slapo-ppolicy cannot be global" );
2369 Debug( LDAP_DEBUG_ANY, "%s\n", cr->msg, 0, 0 );
2374 /* Has User Schema been initialized yet? */
2375 if ( !pwd_UsSchema[0].ad[0] ) {
2379 for (i=0; pwd_UsSchema[i].def; i++) {
2380 code = slap_str2ad( pwd_UsSchema[i].def, pwd_UsSchema[i].ad, &err );
2383 snprintf( cr->msg, sizeof(cr->msg),
2384 "User Schema load failed for attribute \"%s\". Error code %d: %s",
2385 pwd_UsSchema[i].def, code, err );
2386 Debug( LDAP_DEBUG_ANY, "%s\n", cr->msg, 0, 0 );
2395 syn = ch_malloc( sizeof( Syntax ));
2396 *syn = *ad_pwdAttribute->ad_type->sat_syntax;
2397 syn->ssyn_pretty = attrPretty;
2398 ad_pwdAttribute->ad_type->sat_syntax = syn;
2400 mr = ch_malloc( sizeof( MatchingRule ));
2401 *mr = *ad_pwdAttribute->ad_type->sat_equality;
2402 mr->smr_normalize = attrNormalize;
2403 ad_pwdAttribute->ad_type->sat_equality = mr;
2407 on->on_bi.bi_private = ch_calloc( sizeof(pp_info), 1 );
2409 if ( dtblsize && !pwcons ) {
2410 /* accommodate for c_conn_idx == -1 */
2411 pwcons = ch_calloc( sizeof(pw_conn), dtblsize + 1 );
2426 return overlay_register_control( be, LDAP_CONTROL_PASSWORDPOLICYREQUEST );
2435 #ifdef SLAP_CONFIG_DELETE
2436 overlay_unregister_control( be, LDAP_CONTROL_PASSWORDPOLICYREQUEST );
2437 #endif /* SLAP_CONFIG_DELETE */
2448 slap_overinst *on = (slap_overinst *) be->bd_info;
2449 pp_info *pi = on->on_bi.bi_private;
2451 on->on_bi.bi_private = NULL;
2452 free( pi->def_policy.bv_val );
2456 if ( ov_count <=0 && pwcons ) {
2457 pw_conn *pwc = pwcons;
2465 static char *extops[] = {
2466 LDAP_EXOP_MODIFY_PASSWD,
2470 static slap_overinst ppolicy;
2472 int ppolicy_initialize()
2476 for (i=0; pwd_OpSchema[i].def; i++) {
2477 code = register_at( pwd_OpSchema[i].def, pwd_OpSchema[i].ad, 0 );
2479 Debug( LDAP_DEBUG_ANY,
2480 "ppolicy_initialize: register_at failed\n", 0, 0, 0 );
2483 /* Allow Manager to set these as needed */
2484 if ( is_at_no_user_mod( (*pwd_OpSchema[i].ad)->ad_type )) {
2485 (*pwd_OpSchema[i].ad)->ad_type->sat_flags |=
2490 code = register_supported_control( LDAP_CONTROL_PASSWORDPOLICYREQUEST,
2491 SLAP_CTRL_ADD|SLAP_CTRL_BIND|SLAP_CTRL_MODIFY|SLAP_CTRL_HIDE, extops,
2492 ppolicy_parseCtrl, &ppolicy_cid );
2493 if ( code != LDAP_SUCCESS ) {
2494 Debug( LDAP_DEBUG_ANY, "Failed to register control %d\n", code, 0, 0 );
2498 ldap_pvt_thread_mutex_init( &chk_syntax_mutex );
2500 ppolicy.on_bi.bi_type = "ppolicy";
2501 ppolicy.on_bi.bi_db_init = ppolicy_db_init;
2502 ppolicy.on_bi.bi_db_open = ppolicy_db_open;
2503 ppolicy.on_bi.bi_db_close = ppolicy_db_close;
2504 ppolicy.on_bi.bi_db_destroy = ppolicy_db_destroy;
2506 ppolicy.on_bi.bi_op_add = ppolicy_add;
2507 ppolicy.on_bi.bi_op_bind = ppolicy_bind;
2508 ppolicy.on_bi.bi_op_compare = ppolicy_compare;
2509 ppolicy.on_bi.bi_op_delete = ppolicy_restrict;
2510 ppolicy.on_bi.bi_op_modify = ppolicy_modify;
2511 ppolicy.on_bi.bi_op_search = ppolicy_restrict;
2512 ppolicy.on_bi.bi_connection_destroy = ppolicy_connection_destroy;
2514 ppolicy.on_bi.bi_cf_ocs = ppolicyocs;
2515 code = config_register_schema( ppolicycfg, ppolicyocs );
2516 if ( code ) return code;
2518 return overlay_register( &ppolicy );
2521 #if SLAPD_OVER_PPOLICY == SLAPD_MOD_DYNAMIC
2522 int init_module(int argc, char *argv[]) {
2523 return ppolicy_initialize();
2527 #endif /* defined(SLAPD_OVER_PPOLICY) */